MKSI US
SEC Filings
Financials(110)
- 10-QQ2ended 30 Jun 20266 Aug
- 10-QQ1ended 31 Mar 20267 May
- 10-KFY 2025ended 31 Dec 202524 Feb
- 10-QQ3ended 30 Sept 20256 Nov 2025
- 10-QQ2ended 30 Jun 20257 Aug 2025
- 10-QQ1ended 31 Mar 20258 May 2025
- 10-KFY 2024ended 31 Dec 202425 Feb 2025
- 10-QQ3ended 30 Sept 20247 Nov 2024
- 10-QQ2ended 30 Jun 20248 Aug 2024
- 10-QQ1ended 31 Mar 20249 May 2024
- 10-KFY 2023ended 31 Dec 202327 Feb 2024
- 10-QQ3ended 30 Sept 20238 Nov 2023
- 10-QQ2ended 30 Jun 20234 Aug 2023
- 10-QQ1ended 31 Mar 20235 May 2023
- 10-KFY 2022ended 31 Dec 202214 Mar 2023
Events(239)
- 8-KOther Events19 Oct
- 8-KResults of Operations and Financial Condition5 Aug
- 8-KDeparture of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers12 May
- 8-KResults of Operations and Financial Condition6 May
- 8-KDeparture of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers6 Apr
- 8-KResults of Operations and Financial Condition17 Feb
- 8-KMKS Announces Closing of Private Offering of €1 Billion of 4.250% Senior Notes and Refinancing of Term Loan Facility5 Feb
- 8-KMKS Announces Proposed Private Offering of28 Jan
- 8-KResults of Operations and Financial Condition21 Jan
- 8-KResults of Operations and Financial Condition5 Nov 2025
- 8-KResults of Operations and Financial Condition6 Aug 2025
- 8-KMaterial Modification to Security Holders' Rights15 May 2025
- 8-KResults of Operations and Financial Condition7 May 2025
- 8-KResults of Operations and Financial Condition12 Feb 2025
- 8-KMKS Instruments Completes Repricing on its Secured Term Loan B USD and EUR Tranches and Makes a $100 Million Voluntary Prepayment on its Secured Term Loan B USD24 Jan 2025
Insider Ownership(1.7K)
- 4Mora Elizabeth2 Sep
- 4Donlan Renee Martel18 Aug
- 4Lee John Tseng-Chung17 Aug
- 4Williams John Edward4 Aug
- 4Schreiner James Alan16 Jun
- 4Schreiner James Alan11 Jun
- 4McCarthy Michelle M8 Jun
- 3Donlan Renee Martel4 Jun
- 4Henry David Philip2 Jun
- 4Mora Elizabeth2 Jun
- 4Donahue Joseph B28 May
- 4COLELLA GERALD G28 May
- 4Henry David Philip27 May
- 4Mayampurath Ramakumar26 May
- 4Lee John Tseng-Chung26 May
Beneficial Ownership(159)
- SC 13G/AMKS INC3 Sep
- SC 13G/AMKS INC24 Jul
- SC 13GMKS INC16 Jul
- SC 13G/AMKS INC6 May
- SC 13GMKS INC30 Apr
- SC 13GMKS INC29 Apr
- SC 13G/AMKS INC27 Mar
- SC 13G/AMKS INC17 Feb
- SC 13GMKS INC12 Feb
- SC 13G/AMKS INC31 Oct 2025
- SC 13G/AMKS INC17 Oct 2025
- SC 13G/AMKS INC14 Aug 2025
- SC 13GMKS INC8 Aug 2025
- SC 13G/AMKS INC8 Aug 2025
- SC 13G/AMKS INSTRUMENTS INC14 Feb 2025
Other Ownership(76)
- 144Mora Elizabeth1 Sep
- 144Lee John Tseng-Chung14 Aug
- 144Williams John Edward3 Aug
- 144Schreiner James Alan12 Jun
- 144Schreiner James Alan10 Jun
- 144McCarthy Michelle M5 Jun
- 144Henry David Philip1 Jun
- 144Mora Elizabeth1 Jun
- 144Donahue Joseph B27 May
- 144COLELLA GERALD G27 May
- 144Henry David Philip26 May
- 144Lee John Tseng-Chung22 May
- 144Mayampurath Ramakumar22 May
- 144CANNONE PETER III18 May
- 144Moloney Jacqueline F14 May
Proxies(70)
- ARSAnnual report to security holders31 Mar
- DEFA14ADefinitive additional materials31 Mar
- DEF 14ADefinitive proxy statement31 Mar
- PRE 14APreliminary proxy statement20 Mar
- DEFA14ADefinitive additional materials1 Apr 2025
- ARSAnnual report to security holders1 Apr 2025
- DEF 14ADefinitive proxy statement1 Apr 2025
- PRE 14APreliminary proxy statement21 Mar 2025
- DEFA14ADefinitive additional materials27 Mar 2024
- DEF 14ADefinitive proxy statement27 Mar 2024
- ARSAnnual report to security holders27 Mar 2024
- DEFA14ADefinitive additional materials5 Apr 2023
- DEF 14ADefinitive proxy statement5 Apr 2023
- ARSAnnual report to security holders5 Apr 2023
- DEF 14ADefinitive proxy statement31 Mar 2022
Registrations(54)
- S-8Registration statement (employee benefit plan)11 May
- POS AMPost-effective amendment (unspecified)21 Feb 2024
- 424B7Prospectus filing (Rule 424(b)(7))5 Jun 2023
- 424B7Prospectus filing (Rule 424(b)(7))1 Jun 2023
- S-3ASRAutomatic shelf registration statement (S-3)24 Aug 2022
- S-8Registration statement (employee benefit plan)10 May 2022
- 425Business combination communication8 Mar 2021
- 425Business combination communication17 Feb 2021
- 425Business combination communication16 Feb 2021
- 425Business combination communication8 Feb 2021
- S-8Registration statement (employee benefit plan)1 Feb 2019
- S-8Registration statement (employee benefit plan)29 Apr 2016
- S-8Registration statement (employee benefit plan)7 May 2014
- S-8MKS INSTRUMENTS, INC.10 Aug 2009
- S-8MKS INSTRUMENTS, INC.5 Aug 2005
SEC Orders And Notices(23)
- EFFECTNotice of effectiveness29 Feb 2024
- CT ORDERConfidential treatment order5 Jan 2017
- CT ORDERConfidential treatment order5 Jan 2017
- CT ORDERConfidential treatment order5 Jan 2017
- CT ORDERConfidential treatment order18 Mar 2016
- CT ORDERConfidential treatment order2 Sep 2015
- CT ORDERConfidential treatment order2 Sep 2015
- CT ORDERConfidential treatment order20 Mar 2015
- CT ORDERConfidential treatment order19 Dec 2014
- CT ORDERConfidential treatment order17 Sep 2014
- CT ORDERConfidential treatment order9 Jun 2014
- CT ORDERConfidential treatment order9 Jun 2014
- CT ORDERConfidential treatment order9 Dec 2013
- CT ORDERConfidential treatment order27 Mar 2013
- CT ORDERConfidential treatment order18 Jan 2013